Air filtration device



FIG. 1 shows a perspective view of an air filtration device according to the present invention.

FIG. 2 shows a front elevation view of the air filtration device of FIG. 1.

FIG. 3 shows a right side elevation view of the air filtration device of FIG. 1.

FIG. 4 shows a rear elevation view of the air filtration device of FIG. 1.

FIG. 5 shows a left side elevation view of the air filtration device of FIG. 1; and,

FIG. 6 shows a top view of the air filtration device of FIG. 1.

Portions or features of the air filtration device not shown in the drawings form no part of the claimed design. The broken lines shown in the drawings are for illustrative purposes only, and form no part of the claimed design. 

The ornamental design for an air filtration device, as shown and described. 